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| CAS No.: | 7719-12-2 |
|---|---|
| Name: | Phosphorus trichloride |
| Article Data: | 296 |
| Molecular Structure: | |
|
|
|
| Formula: | PCl3 |
| Molecular Weight: | 137.333 |
| Synonyms: | Phosphoruschloride (PCl3) (8CI);Phosphine, trichloro-;Phosphorous chloride;Phosphoruschloride (Cl6P2);Trichlorophosphine;HSDB 1031;Trichlorophosphine;Fosfortrichloride; |
| EINECS: | 231-749-3 |
| Density: | 1.574 g/cm3 |
| Melting Point: | -93.6 °C (179.6 K) |
| Boiling Point: | 76.1 °C (349.3 K) |
| Flash Point: | 76°C |
| Solubility: | Soluble in benzene, ether, chloroform, halogenated organic solvents |
| Appearance: | colorless or slight yellow liquid |
| Hazard Symbols: |
 T+, C
|
| Risk Codes: | 14-26/28-29-35-48/20-40 |
| Safety: | 26-36/37/39-45-7/8-43-28 |
| Transport Information: | UN 3390 6.1/PG 1 |
| PSA: | 13.59000 |
| LogP: | 2.92970 |
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Consensus Reports
Standards and Recommendations
ACGIH TLV: TWA 0.2 ppm; STEL 0.5 ppm
DFG MAK: 0.5 ppm (2.8 mg/m3)
DOT Classification: 8; Label: Corrosive, Poison
Analytical Methods
Specification
The Phosphorus trichloride with CAS registry number of 7719-12-2 is also known as Phosphine, trichloro-. The IUPAC name is Trichlorophosphane. It belongs to product categories of Inorganics; Inorganic Chemicals; Chlorination Micro/Nanoelectronics; C-X Bond Formation (Halogen); Electronic Chemicals; Others; Synthetic Reagents; Chlorination. Its EINECS registry number is 231-749-3. In addition, the formula is Cl3P and the molecular weight is 137.33. This chemical is a colorless or slight yellow liquid and should be sealed in cool, ventilated and dry room.
Physical properties about Phosphorus trichloride are: (1)ACD/LogP: 3.84; (2)ACD/LogD (pH 5.5): 3.84; (3)ACD/LogD (pH 7.4): 3.84; (4)ACD/BCF (pH 5.5): 489.02; (5)ACD/BCF (pH 7.4): 489.02; (6) Polar Surface Area: 13.59Å2; (7)Enthalpy of Vaporization: 30.5 kJ/mol; (8)Boiling Point: 75.5 °C at 760 mmHg; (9)Vapour Pressure: 115 mmHg at 25 °C.
Preparation of Phosphorus trichloride: it is prepared industrially by the reaction of chlorine with a refluxing solution of white phosphorus.
P4+6Cl2→4PCl3
Uses of Phosphorus trichloride: it is used to prepared tetra-N-ethyl-phosphorodiamidous acid chloride by reaction with diethylamine. This reaction occurs with solvent petroleum ether at the temperature of -75~25 °C and the yield is about 61%. It is also used for herbicide, insecticide, plasticiser, oil additive, and flame retardant.
When you are using this chemical, please be cautious about it. It reacts violently with water and liberates toxic gas. It also may cause burns. As a chemical, it has danger of serious damage to health by prolonged exposure through inhalation. However, there is limited evidence of a carcinogenic effect. During using it, wear suitable protective clothing, gloves and eye/face protection. Keep container tightly closed and dry. After contact with skin, wash immediately. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell seek medical advice immediately.
You can still convert the following datas into molecular structure:
1. Canonical SMILES: P(Cl)(Cl)Cl
2. InChI: InChI=1S/Cl3P/c1-4(2)3
3. InChIKey: FAIAAWCVCHQXDN-UHFFFAOYSA-N
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| guinea pig | LC50 | inhalation | 50ppm/4H (50ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: IRRITABILITY LUNGS, THORAX, OR RESPIRATION: DYSPNEA | American Industrial Hygiene Association Journal. Vol. 25, Pg. 470, 1964. |
| mammal (species unspecified) | LD50 | oral | 350mg/kg (350mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 39(4), Pg. 86, 1974. | |
| rabbit | LDLo | skin | 1260mg/kg (1260mg/kg) | BEHAVIORAL: MUSCLE WEAKNESS LIVER: CHANGE IN GALL BLADDER STRUCTURE OR FUNCTION BLOOD: OTHER CHANGES | Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 71, 1990. |
| rat | LC50 | inhalation | 104ppm/4H (104ppm) | LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES BLOOD: HEMORRHAGE | American Industrial Hygiene Association Journal. Vol. 25, Pg. 470, 1964. |
| rat | LD50 | oral | 18mg/kg (18mg/kg) | BEHAVIORAL: FOOD INTAKE (ANIMAL) LUNGS, THORAX, OR RESPIRATION: CHRONIC PULMONARY EDEMA GASTROINTESTINAL: PERITONITIS | Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 71, 1990. |